public void TestCalc2Repeaters(bool useArray)
{
IVectorFactory factory = useArray ? (IVectorFactory) new ArrayVectorFactory() : (IVectorFactory) new BNodeVectorFactory();
/*
* E ← T ((‘+’ / ‘-’) T)*
* T ← F (('*' / '/') F)*
* F ← N / '(' E ')'
* N ← [0-9]+
*/
var eNumber = new CollapseToString(Some.OneOrMore(new LiteralAnyCharOf("0123456789")));
var factor = new Placeholder();
var term = new Placeholder();
var expr = new Placeholder();
factor.Expression = new FirstOf(eNumber, new ExtractOne(1, new Sequence(new Literal('('), expr, new Literal(')'))));
Function toPrefix = z => {
IVector v = (IVector)z;
object v0 = v[0];
IVector v1 = (IVector)v[1];
if (v1 == factory.Empty)
{
return(v0);
}
for (int i = 0; i < v1.Length; i++)
{
IVector vv = (IVector)v1[i];
v0 = factory.Create(vv[0], v0, vv[1]);
}
return(v0);
};
term.Expression = new CallbackHandler(new Sequence(factor, Some.ZeroOrMore(new Sequence(new LiteralAnyCharOf("*/"), factor))), toPrefix);
expr.Expression = new CallbackHandler(new Sequence(term, Some.ZeroOrMore(new Sequence(new LiteralAnyCharOf("+-"), term))), toPrefix);
{
var parser = new Parser(expr, TextCursor.Create("12+3*45+6+789*(6+2)*9+0"), factory);
Result r = parser.Run();
string expected = "(+ (+ (+ (+ 12 (* 3 45)) 6) (* (* 789 (+ 6 2)) 9)) 0)";
Assert.IsNotNull(r);
Assert.IsFalse(r.Cursor.CanPop());
Assert.AreEqual(expected, Convert.ToString(r.Value).Replace("\"", "").Replace("'", ""));
object num = new CalculatorVisitor().Process(r.Value);
Assert.AreEqual(Convert.ToDouble(12 + 3 * 45 + 6 + 789 * (6 + 2) * 9 + 0), num);
}
{
var parser = new Parser(expr, TextCursor.Create("12+3*4a5+6+7*(6+2)*9+0"), factory);
Result r = parser.Run();
Assert.IsNotNull(r);
Assert.IsTrue(r.Cursor.CanPop());
if (System.Diagnostics.Debugger.IsAttached)
{
System.Diagnostics.Debug.WriteLine(parser.GetError());
}
Assert.AreEqual(6, parser.FailCursor.Position);
}
{
var parser = new Parser(expr, TextCursor.Create("12+3*45+(6+7*(6+2)*9+0"), factory);
Result r = parser.Run();
Assert.IsNotNull(r);
Assert.IsTrue(r.Cursor.CanPop());
if (System.Diagnostics.Debugger.IsAttached)
{
System.Diagnostics.Debug.WriteLine(parser.GetError());
}
Assert.AreEqual(22, parser.FailCursor.Position);
}
{
var parser = new Parser(expr, TextCursor.Create("(12+3*45+(6+7*(6+2)*9+0)"), factory);
Result r = parser.Run();
Assert.IsNull(r);
if (System.Diagnostics.Debugger.IsAttached)
{
System.Diagnostics.Debug.WriteLine(parser.GetError());
}
Assert.AreEqual(24, parser.FailCursor.Position);
}
}
public void TestNested(bool useArray)
{
IVectorFactory factory = useArray ? (IVectorFactory) new ArrayVectorFactory() : (IVectorFactory) new BNodeVectorFactory();
Function toString = delegate(object r) {
StringBuilder sb = new StringBuilder();
foreach (object o in factory.AsEnumerable((IVector)r))
{
sb.Append(o);
}
return(sb.ToString());
};
Function toList = delegate(object r) {
List <object> list = new List <object>();
foreach (object o in factory.AsEnumerable((IVector)r))
{
list.Add(o);
}
return(list);
};
{
var _digits = new LiteralAnyCharOf("0123456789");
var _letters = new LiteralAnyCharOf("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ");
var _number = new CallbackHandler(Some.OneOrMore(_digits), (v) => { return(new Token("number", toString(v))); });
var _ident = new CallbackHandler(new Sequence(_letters, new CallbackHandler(Some.ZeroOrMore(new FirstOf(_digits, _letters)), toString)),
(v) => { return(new Token("ident", toString(v))); });
var _whitespace = new LiteralAnyCharOf(" \t\n\r\f\v");
var _comment = new Sequence(new LiteralString("/*"), Some.ZeroOrMore(new Sequence(
Predicate.Not(new LiteralString("*/")), new LiteralAny())), new LiteralString("*/"));
var _atmosphere = new FirstOf(_whitespace, _comment);
var _lexeme = new FirstOf(
new CallbackHandler(new FirstOf(new LiteralAnyCharOf("{"), new LiteralAnyCharOf("}"), new LiteralAnyCharOf("|")),
(v) => { string s = Convert.ToString(v); return(new Token(s, s)); }),
new ExtractOne(0, new Sequence(new FirstOf(_ident, _number),
Predicate.And(new FirstOf(new LiteralAnyCharOf("{}|"), _atmosphere, new LiteralEOI())))));
var q = new ExtractOne(1, new Sequence(Some.ZeroOrMore(_atmosphere),
Some.ZeroOrMore(new ExtractOne(0, new Sequence(_lexeme, Some.ZeroOrMore(_atmosphere)))), new LiteralEOI()));
{
var parser = new Parser(q, TextCursor.Create(" a1 set plus 32434 Ratio| /* ffwe34kfn3k4u3f$#$df \n34f2$F@$F$F#$DF#E#44 432#@$# $%@$***/ define edit {f 2 xz /*****/ e} /*\r*/\r|\r"),
factory);
var r = parser.Run();
Assert.IsNotNull(r);
IVector v = r.Value as IVector;
Assert.IsNotNull(v);
Assert.AreEqual(15, v.Length);
List <Token> list = new VectorFactoryHelper(factory).ToList <Token>(v);
Assert.AreEqual("ident", list[0].ID);
Assert.AreEqual("a1", list[0].Value);
Assert.AreEqual("number", list[3].ID);
Assert.AreEqual("32434", list[3].Value);
Assert.AreEqual("{", list[8].ID);
Assert.AreEqual("{", list[8].Value);
Assert.AreEqual("}", list[13].ID);
Assert.AreEqual("}", list[13].Value);
Assert.AreEqual("|", list[14].ID);
Assert.AreEqual("|", list[14].Value);
}
var _sym = new CallbackHandler(new LiteralToken("ident"), x => ((Token)x).Value);
var _num = new CallbackHandler(new LiteralToken("number"), x => Convert.ToInt32(((Token)x).Value));
var _list = new Placeholder();
var _expr = new FirstOf(_list, _sym, _num);
_list.Expression = new FirstOf(
new CallbackHandler(new Sequence(new LiteralToken("{"), Some.ZeroOrMore(_expr), new LiteralToken("}")), x => toNode((IVector)((IVector)x)[1], null)),
new CallbackHandler(new Sequence(new LiteralToken("{"), Some.OneOrMore(_expr), new LiteralToken("|"), _expr, new LiteralToken("}")), x => toNode((IVector)((IVector)x)[1], ((IVector)x)[3]))
);
var q2 = new ExtractOne(0, new Sequence(_list, new LiteralEOI()));
{
var parser = new Parser(q,
new Cursor <char>(" { any 90 {set {plus 32434 Ratio}|/* ffwetrash34kfn3k4u3f$#$df \n34f2$F@$F$F#$DF#E#44 432#@$# $%@$***/ define} {edit {f 2 {}xz /*****/ e} /*\r*/|\rr}\r \n111} \t"),
factory);
var r = parser.Run();
Assert.IsNotNull(r);
IVector v = r.Value as IVector;
Assert.IsNotNull(v);
List <Token> list = new VectorFactoryHelper(factory).ToList <Token>(v);
var parser2 = new Parser(q2, new Cursor <Token>(list), factory);
var r2 = parser2.Run();
Assert.IsNotNull(r2);
BNode n1 = r2.Value as BNode;
Assert.IsNotNull(n1);
Assert.AreEqual(5, n1.Length);
Assert.AreEqual("(any #System.Int32(90) (set (plus #System.Int32(32434) Ratio) . define) (edit (f #System.Int32(2) () xz e) . r) #System.Int32(111))", n1.ToString().Replace("\"", ""));
}
}
}
public void TestAndPredicateMatcher()
{
{//classic {a^n b^n c^n | n>=1} example
var _a = new Placeholder();
_a.Expression = new Sequence(new LiteralAnyCharOf("a"), Some.Optional(_a), new LiteralAnyCharOf("b"));
var _b = new Placeholder();
_b.Expression = new Sequence(new LiteralAnyCharOf("b"), Some.Optional(_b), new LiteralAnyCharOf("c"));
var q = new Sequence(Predicate.And(new Sequence(_a, Predicate.Not(new LiteralAnyCharOf("b")))), Some.OneOrMore(new LiteralAnyCharOf("a")), _b, new LiteralEOI());
{
var parser = new Parser(q, TextCursor.Create("aaabbbccc"));
var r = parser.Run();
Assert.IsNotNull(r);
}
{
var parser = new Parser(q, TextCursor.Create("abc"));
var r = parser.Run();
Assert.IsNotNull(r);
}
{
var parser = new Parser(q, TextCursor.Create("aabbc"));
var r = parser.Run();
Assert.IsNull(r);
}
{
var parser = new Parser(q, TextCursor.Create("aabbccc"));
var r = parser.Run();
Assert.IsNull(r);
}
{
var parser = new Parser(q, TextCursor.Create("aabccc"));
var r = parser.Run();
Assert.IsNull(r);
}
{
var parser = new Parser(q, TextCursor.Create("aabcc"));
var r = parser.Run();
Assert.IsNull(r);
}
{
var parser = new Parser(q, TextCursor.Create("aabbbc"));
var r = parser.Run();
Assert.IsNull(r);
}
{
var parser = new Parser(q, TextCursor.Create("aabbbcc"));
var r = parser.Run();
Assert.IsNull(r);
}
{
var parser = new Parser(q, TextCursor.Create("aacbb"));
var r = parser.Run();
Assert.IsNull(r);
}
{
var parser = new Parser(q, TextCursor.Create("aabbac"));
var r = parser.Run();
Assert.IsNull(r);
}
{
var parser = new Parser(q, TextCursor.Create("bca"));
var r = parser.Run();
Assert.IsNull(r);
}
}
}
public void TestComplex()
{
Function toString = delegate(object r) {
IVector v = (IVector)r;
StringBuilder sb = new StringBuilder();
for (int i = 0; i < v.Length; i++)
{
sb.Append(v[i]);
}
return(sb.ToString());
};
{
var _digits = new LiteralAnyCharOf("0123456789");
//var _letters = new LiteralAnyCharOf("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ");
var _letters = new FirstOf(
new LiteralCharCategory(System.Globalization.UnicodeCategory.LowercaseLetter),
new LiteralCharCategory(System.Globalization.UnicodeCategory.UppercaseLetter),
new LiteralCharCategory(System.Globalization.UnicodeCategory.TitlecaseLetter),
new LiteralCharCategory(System.Globalization.UnicodeCategory.LetterNumber),
new LiteralCharCategory(System.Globalization.UnicodeCategory.ModifierLetter),
new LiteralCharCategory(System.Globalization.UnicodeCategory.OtherLetter)
);
var _number = new CallbackHandler(Some.OneOrMore(_digits), toString);
var _ident = new CallbackHandler(new Sequence(_letters, new CallbackHandler(Some.ZeroOrMore(new FirstOf(_digits, _letters)), toString)), toString);
var _whitespace = new LiteralAnyCharOf(" \t\n\r\f\v");
var _comment = new Sequence(new LiteralString("/*"), Some.ZeroOrMore(new Sequence(Predicate.Not(new LiteralString("*/")), new LiteralAny())), new LiteralString("*/"));
var _atmosphere = new FirstOf(_whitespace, _comment);
var _lexeme = new FirstOf(new LiteralAnyCharOf("{"), new LiteralAnyCharOf("}"), new LiteralAnyCharOf(";"),
new ExtractOne(0, new Sequence(new FirstOf(_ident, _number), Predicate.And(new FirstOf(new LiteralAnyCharOf("{};"), _atmosphere, new LiteralEOI())))));
var q = new ExtractOne(1, new Sequence(Some.ZeroOrMore(_atmosphere), Some.ZeroOrMore(new ExtractOne(0, new Sequence(_lexeme, Some.ZeroOrMore(_atmosphere)))), new LiteralEOI()));
{
var parser = new Parser(q, TextCursor.Create(" a1 set plus 32434 Ratio; /* ffwe34kfn3k4u3f$#$df \n34f2$F@$F$F#$DF#E#44 432#@$# $%@$***/ define edit {f 2 xz /*****/ e} /*\r*/\r;\r"));
var r = parser.Run();
Assert.IsNotNull(r);
IVector v = r.Value as IVector;
Assert.IsNotNull(v);
Assert.AreEqual(15, v.Length);
Assert.AreEqual("a1", v[0]);
Assert.AreEqual('{', v[8]);
Assert.AreEqual('}', v[13]);
Assert.AreEqual(';', v[14]);
}
}
}